<?php

namespace App\Http\Controllers\Admin;

use App\Enums\UserRole;
use App\Http\Controllers\Controller;
use App\Models\User;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Validation\Rules\Enum;
use Illuminate\View\View;

class UserController extends Controller
{
    public function index(Request $request): View
    {
        $query = User::withCount('sourcesAssignees')->with('sections')->orderBy('name');

        if ($request->filled('role')) {
            $query->where('role', $request->input('role'));
        }

        if ($request->filled('q')) {
            $q = trim($request->get('q'));
            $query->where(fn ($wq) => $wq
                ->where('name',  'ilike', "%{$q}%")
                ->orWhere('email', 'ilike', "%{$q}%")
            );
        }

        $users = $query->paginate(25)->withQueryString();

        return view('admin.utilisateurs.index', compact('users'));
    }

    public function edit(User $user): View
    {
        $user->load('sections', 'sourcesAssignees');

        return view('admin.utilisateurs.edit', compact('user'));
    }

    public function update(Request $request, User $user): RedirectResponse
    {
        $data = $request->validate([
            'role' => ['required', new Enum(UserRole::class)],
        ]);

        if ($user->id === auth()->id()) {
            return back()->with('error', 'Vous ne pouvez pas modifier votre propre rôle.');
        }

        if ($user->role === UserRole::Admin && $data['role'] !== UserRole::Admin->value) {
            $adminCount = User::where('role', UserRole::Admin->value)->count();
            if ($adminCount <= 1) {
                return back()->with('error', 'Impossible de retirer le rôle admin au dernier administrateur.');
            }
        }

        $user->update(['role' => $data['role']]);

        return back()->with('success', 'Rôle mis à jour.');
    }

    public function toggleActive(User $user): RedirectResponse
    {
        if ($user->id === auth()->id()) {
            return back()->with('error', 'Vous ne pouvez pas désactiver votre propre compte.');
        }

        if ($user->is_active && $user->role === UserRole::Admin) {
            $activeAdmins = User::where('role', UserRole::Admin->value)->where('is_active', true)->count();
            if ($activeAdmins <= 1) {
                return back()->with('error', 'Impossible de désactiver le dernier administrateur actif.');
            }
        }

        $user->update(['is_active' => ! $user->is_active]);

        $label = $user->is_active ? 'activé' : 'désactivé';
        return back()->with('success', "Compte {$label}.");
    }
}